The Urban Dictionary T-Shirt

Used to describe taking a shit. Used more so to describe taking a dump where a BIG piece of shit is "pinched". The BIG piece of shit is the "loaf" as in a loaf of bread in terms of size. To pinch a loaf is to shit out a turd that is the size of a loaf of bread. Pinching a loaf usually involves extreme stretching of the anus and pain is involved in pinching the loaf.

The Urban Dictionary T-Shirt

The act of dispursing poo out of the anus. Slang terms include: pinch a mean one, dropping the kids off at the pool, taking the browns to the super bowl, taking a dump, lose some poundage, drop a load, etc.